mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 01:22:43 +00:00
111 lines
3.7 KiB
C++
111 lines
3.7 KiB
C++
/*
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* Copyright (c) 2020-2021, Liav A. <liavalb@hotmail.co.il>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Types.h>
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#include <Kernel/Boot/CommandLine.h>
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#include <Kernel/FileSystem/SysFS/Component.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Firmware/Directory.h>
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#include <Kernel/Firmware/ACPI/Definitions.h>
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#include <Kernel/Firmware/ACPI/Initialize.h>
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#include <Kernel/Interrupts/IRQHandler.h>
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#include <Kernel/Library/LockRefPtr.h>
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#include <Kernel/Memory/PhysicalAddress.h>
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#include <Kernel/Memory/Region.h>
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#include <Kernel/Memory/TypedMapping.h>
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#include <Kernel/Memory/VirtualAddress.h>
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namespace Kernel::ACPI {
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class ACPISysFSDirectory : public SysFSDirectory {
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public:
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virtual StringView name() const override { return "acpi"sv; }
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static NonnullLockRefPtr<ACPISysFSDirectory> must_create(SysFSFirmwareDirectory& firmware_directory);
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private:
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void find_tables_and_register_them_as_components();
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explicit ACPISysFSDirectory(SysFSFirmwareDirectory& firmware_directory);
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};
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class ACPISysFSComponent : public SysFSComponent {
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public:
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static NonnullLockRefPtr<ACPISysFSComponent> create(StringView name, PhysicalAddress, size_t table_size);
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virtual StringView name() const override { return m_table_name->view(); }
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virtual ErrorOr<size_t> read_bytes(off_t, size_t, UserOrKernelBuffer&, OpenFileDescription*) const override;
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virtual size_t size() const override final { return m_length; }
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protected:
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ErrorOr<NonnullOwnPtr<KBuffer>> try_to_generate_buffer() const;
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ACPISysFSComponent(NonnullOwnPtr<KString> table_name, PhysicalAddress, size_t table_size);
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PhysicalAddress m_paddr;
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size_t m_length { 0 };
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NonnullOwnPtr<KString> m_table_name;
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};
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class Parser final : public IRQHandler {
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public:
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static Parser* the();
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static void must_initialize(PhysicalAddress rsdp, PhysicalAddress fadt, u8 irq_number);
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virtual StringView purpose() const override { return "ACPI Parser"sv; }
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virtual bool handle_irq(RegisterState const&) override;
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Optional<PhysicalAddress> find_table(StringView signature);
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void try_acpi_reboot();
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bool can_reboot();
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void try_acpi_shutdown();
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bool can_shutdown() { return false; }
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void enable_aml_parsing();
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PhysicalAddress rsdp() const { return m_rsdp; }
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PhysicalAddress main_system_description_table() const { return m_main_system_description_table; }
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bool is_xsdt_supported() const { return m_xsdt_supported; }
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void enumerate_static_tables(Function<void(StringView, PhysicalAddress, size_t)>);
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virtual bool have_8042() const
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{
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return m_x86_specific_flags.keyboard_8042;
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}
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FADTFlags::HardwareFeatures const& hardware_features() const { return m_hardware_flags; }
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FADTFlags::x86_Specific_Flags const& x86_specific_flags() const { return m_x86_specific_flags; }
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~Parser() = default;
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private:
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Parser(PhysicalAddress rsdp, PhysicalAddress fadt, u8 irq_number);
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void locate_static_data();
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void locate_main_system_description_table();
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void initialize_main_system_description_table();
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size_t get_table_size(PhysicalAddress);
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u8 get_table_revision(PhysicalAddress);
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void process_fadt_data();
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void process_dsdt();
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bool validate_reset_register(Memory::TypedMapping<Structures::FADT> const&);
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void access_generic_address(Structures::GenericAddressStructure const&, u32 value);
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PhysicalAddress m_rsdp;
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PhysicalAddress m_main_system_description_table;
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Vector<PhysicalAddress> m_sdt_pointers;
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PhysicalAddress m_fadt;
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bool m_xsdt_supported { false };
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bool m_can_process_bytecode { false };
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FADTFlags::HardwareFeatures m_hardware_flags;
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FADTFlags::x86_Specific_Flags m_x86_specific_flags;
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};
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}
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